Solar cell



FIG. 1 is a top perspective view of a solar cell showing my new design;

FIG. 2 is an enlarged fragmental view taken from the designated area in FIG. 1;

FIG. 3 is another top perspective view thereof;

FIG. 4 is an enlarged fragmental view taken from the designated area in FIG. 3;

FIG. 5 is a top plan view thereof;

FIG. 6 is a rear side elevation view thereof;

FIG. 7 is a front side elevation view thereof;

FIG. 8 is a left side elevation view thereof;

FIG. 9 is a right side elevation view thereof; and,

FIG. 10 is a bottom plan view thereof.

In the drawing views, the even-broken line represents unclaimed environment and forms no part of the claimed design. The long dash-short dash represents the boundary of the claimed design. 

CLAIM The ornamental design for a solar cell, as shown and described. 